Weaker Quadriceps Muscle Strength With a Quadriceps Tendon Graft Compared With a Patellar or Hamstring Tendon Graft at 7 Months After Anterior Cruciate Ligament Reconstruction
(2024) In American Journal of Sports Medicine 52(1). p.69-76- Abstract
Background: Impaired quadriceps muscle strength after anterior cruciate ligament reconstruction (ACLR) is associated with worse clinical outcomes and a risk of reinjuries. Yet, we know little about quadriceps muscle strength in patients reconstructed with a quadriceps tendon (QT) graft, which is increasing in popularity worldwide. Purpose: To describe and compare isokinetic quadriceps strength in patients undergoing ACLR with a QT, hamstring tendon (HT), or bone–patellar tendon–bone (BPTB) autograft. Study Design: Cross-sectional study; Level of evidence, 3. Methods: We included patients with QT grafts (n = 104) and matched them to patients with HT (n = 104) and BPTB (n = 104) grafts based on age, sex, and associated meniscal surgery.... (More)
Background: Impaired quadriceps muscle strength after anterior cruciate ligament reconstruction (ACLR) is associated with worse clinical outcomes and a risk of reinjuries. Yet, we know little about quadriceps muscle strength in patients reconstructed with a quadriceps tendon (QT) graft, which is increasing in popularity worldwide. Purpose: To describe and compare isokinetic quadriceps strength in patients undergoing ACLR with a QT, hamstring tendon (HT), or bone–patellar tendon–bone (BPTB) autograft. Study Design: Cross-sectional study; Level of evidence, 3. Methods: We included patients with QT grafts (n = 104) and matched them to patients with HT (n = 104) and BPTB (n = 104) grafts based on age, sex, and associated meniscal surgery. Data were collected through clinical strength testing at a mean of 7 ± 1 months postoperatively. Isokinetic strength was measured at 90 deg/s, and quadriceps strength was expressed as the limb symmetry index (LSI) for peak torque, total work, torque at 30° of knee flexion, and time to peak torque. Results: Patients with QT grafts had the most impaired isokinetic quadriceps strength, with the LSI ranging between 67.5% and 75.1%, followed by those with BPTB grafts (74.4%-81.5%) and HT grafts (84.0%-89.0%). Patients with QT grafts had a significantly lower LSI for all variables compared with patients with HT grafts (mean difference: peak torque: −17.4% [95% CI, −21.7 to −13.2], P <.001; total work: −15.9% [95% CI, −20.6 to −11.1], P <.001; torque at 30° of knee flexion: −8.8% [95% CI, −14.7 to −2.9], P =.001; time to peak torque: −17.7% [95% CI, −25.8 to −9.6], P <.001). Compared with patients with BPTB grafts, patients with QT grafts had a significantly lower LSI for all variables (mean difference: peak torque: −6.9% [95% CI, −11.2 to −2.7], P <.001; total work: −7.7% [95% CI, −12.4 to −2.9], P <.001; torque at 30° of knee flexion: −6.3% [95% CI, −12.2 to −0.5], P =.03; time to peak torque: −8.8% [95% CI, −16.9 to −0.7], P =.03). None of the graft groups reached a mean LSI of >90% for peak torque (QT: 67.5% [95% CI, 64.8-70.1]; HT: 84.9% [95% CI, 82.4-87.4]; BPTB: 74.4% [95% CI, 72.0-76.9]). Conclusion: At 7 months after ACLR, patients with QT grafts had significantly worse isokinetic quadriceps strength than patients with HT and BPTB grafts. None of the 3 graft groups reached a mean LSI of >90% in quadriceps strength.
(Less)
- author
- Holmgren, David ; Noory, Shiba ; Moström, Eva ; Grindem, Hege ; Stålman, Anders and Wörner, Tobias LU
- organization
- publishing date
- 2024-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- ACL reconstruction, ACL rehabilitation, isokinetic strength, quadriceps graft, quadriceps strength
- in
- American Journal of Sports Medicine
- volume
- 52
- issue
- 1
- pages
- 8 pages
- publisher
- SAGE Publications
- external identifiers
-
- pmid:38164665
- scopus:85181214824
- ISSN
- 0363-5465
- DOI
- 10.1177/03635465231209442
- language
- English
- LU publication?
- yes
- id
- 0273a5ef-ecdb-4f32-9d7d-d0dfbdc81866
- date added to LUP
- 2024-01-29 14:51:37
- date last changed
- 2024-04-15 05:38:05
@article{0273a5ef-ecdb-4f32-9d7d-d0dfbdc81866,
abstract = {{<p>Background: Impaired quadriceps muscle strength after anterior cruciate ligament reconstruction (ACLR) is associated with worse clinical outcomes and a risk of reinjuries. Yet, we know little about quadriceps muscle strength in patients reconstructed with a quadriceps tendon (QT) graft, which is increasing in popularity worldwide. Purpose: To describe and compare isokinetic quadriceps strength in patients undergoing ACLR with a QT, hamstring tendon (HT), or bone–patellar tendon–bone (BPTB) autograft. Study Design: Cross-sectional study; Level of evidence, 3. Methods: We included patients with QT grafts (n = 104) and matched them to patients with HT (n = 104) and BPTB (n = 104) grafts based on age, sex, and associated meniscal surgery. Data were collected through clinical strength testing at a mean of 7 ± 1 months postoperatively. Isokinetic strength was measured at 90 deg/s, and quadriceps strength was expressed as the limb symmetry index (LSI) for peak torque, total work, torque at 30° of knee flexion, and time to peak torque. Results: Patients with QT grafts had the most impaired isokinetic quadriceps strength, with the LSI ranging between 67.5% and 75.1%, followed by those with BPTB grafts (74.4%-81.5%) and HT grafts (84.0%-89.0%). Patients with QT grafts had a significantly lower LSI for all variables compared with patients with HT grafts (mean difference: peak torque: −17.4% [95% CI, −21.7 to −13.2], P <.001; total work: −15.9% [95% CI, −20.6 to −11.1], P <.001; torque at 30° of knee flexion: −8.8% [95% CI, −14.7 to −2.9], P =.001; time to peak torque: −17.7% [95% CI, −25.8 to −9.6], P <.001). Compared with patients with BPTB grafts, patients with QT grafts had a significantly lower LSI for all variables (mean difference: peak torque: −6.9% [95% CI, −11.2 to −2.7], P <.001; total work: −7.7% [95% CI, −12.4 to −2.9], P <.001; torque at 30° of knee flexion: −6.3% [95% CI, −12.2 to −0.5], P =.03; time to peak torque: −8.8% [95% CI, −16.9 to −0.7], P =.03). None of the graft groups reached a mean LSI of >90% for peak torque (QT: 67.5% [95% CI, 64.8-70.1]; HT: 84.9% [95% CI, 82.4-87.4]; BPTB: 74.4% [95% CI, 72.0-76.9]). Conclusion: At 7 months after ACLR, patients with QT grafts had significantly worse isokinetic quadriceps strength than patients with HT and BPTB grafts. None of the 3 graft groups reached a mean LSI of >90% in quadriceps strength.</p>}},
author = {{Holmgren, David and Noory, Shiba and Moström, Eva and Grindem, Hege and Stålman, Anders and Wörner, Tobias}},
issn = {{0363-5465}},
keywords = {{ACL reconstruction; ACL rehabilitation; isokinetic strength; quadriceps graft; quadriceps strength}},
language = {{eng}},
number = {{1}},
pages = {{69--76}},
publisher = {{SAGE Publications}},
series = {{American Journal of Sports Medicine}},
title = {{Weaker Quadriceps Muscle Strength With a Quadriceps Tendon Graft Compared With a Patellar or Hamstring Tendon Graft at 7 Months After Anterior Cruciate Ligament Reconstruction}},
url = {{http://dx.doi.org/10.1177/03635465231209442}},
doi = {{10.1177/03635465231209442}},
volume = {{52}},
year = {{2024}},
}